12 Replies Latest reply on Mar 21, 2014 2:09 PM by Vandana B -Oracle

    ORA-12514: TNS:listener does not currently know of service requested in connect descriptor

    Soumyajit Haldar



      I have 4 node RAC ( on Exadata for my EBS (12.1.3). Due to certain maintenace requirement, I had to shutdown the first two instances (RAC1 and RAC2) and the local listener of my RAC.


      Previously, everything was working fine but after shutting down first two instances, I am hitting ORA-12514 sometime. And othertimes, it is working fine. I am connecting to the database from EBS using scan and service name.


      Can you please help me to identify why I am hitting this error?





      PS: My understanding is this is a database connection issue and thus placed in database forum instead of EBS.